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Herb · Asteraceae family

Tarragon

Artemisia dracunculus

Full sun 0.3–0.9 m × 0.3–0.45 m Flowers July–August Harvest March–November to −29 °C
Flower colours Click a colour

In short a 10-second read

SunFull sun
Size0.3–0.9 m
spacing 30 cm
FlowersJuly–August
PlantingApril–June
WinterProtect from winter wet

Where to plant and how much to water

Sun, soil and water.

It grows best in full sun, in dry to average soil.

Sun

Sun6 hours or more
Part shade3–6 hours
Shadeunder 3 h

Soil

acidic to neutral soil
acidicneutralalkaline
dry to averagehumus-richloamysandy

Watering

Tarragon — Watering
drought tolerant once establishedregularly until establishedless when it rains

Frost

−29 °C
protect from winter wetmulch around the basedies back in winter, regrows in spring

How much space it takes

Mature size.

The mature plant next to a person (175 cm).

50 cm1 m1.5 m0.3–0.9 mspread 0.3–0.45 m
0.3–0.9 m× spread 0.3–0.45 m

Plant 30 cm apart.

How to plant: staggered, 30 cm apart

Reaches maturity in about 2–5 years. The final size depends on the cultivar and the spot — we give the range from smallest to largest.

Calendar

Through the year.

Months for Central Europe. The line shows the current month.

The year at a glance

Flowers: JanuaryFlowers: FebruaryFlowers: MarchFlowers: AprilFlowers: MayFlowers: JuneFlowers: JulyFlowers: AugustFlowers: SeptemberFlowers: OctoberFlowers: NovemberFlowers: DecemberPlanting: JanuaryPlanting: FebruaryPlanting: MarchPlanting: AprilPlanting: MayPlanting: JunePlanting: JulyPlanting: AugustPlanting: SeptemberPlanting: OctoberPlanting: NovemberPlanting: DecemberFeeding: JanuaryFeeding: FebruaryFeeding: MarchFeeding: AprilFeeding: MayFeeding: JuneFeeding: JulyFeeding: AugustFeeding: SeptemberFeeding: OctoberFeeding: NovemberFeeding: DecemberHarvest: JanuaryHarvest: FebruaryHarvest: MarchHarvest: AprilHarvest: MayHarvest: JuneHarvest: JulyHarvest: AugustHarvest: SeptemberHarvest: OctoberHarvest: NovemberHarvest: DecemberJanFebMarAprMayJunJulAugSepOctNovDec
FlowersPlantingFeedingHarvest
Now, in October: time to harvest.
JanFebMarAprMayJunJulAugSepOctNovDec

Flowers

JanFebMarAprMayJunJulAugSepOctNovDec

July–August · yellow, green or white

Planting

JanFebMarAprMayJunJulAugSepOctNovDec

container plant: April–June

Feeding

JanFebMarAprMayJunJulAugSepOctNovDec

March–April

Harvest

JanFebMarAprMayJunJulAugSepOctNovDec

March–November

Feeding

Nutrition.

Compost

3 l/m² once in spring · March–April

JanFebMarAprMayJunJulAugSepOctNovDec

Pests and diseases

Common problems and what to do.

The most common problems in Central Europe. Protection is listed from the gentlest option.

What you will see

Rotting roots, white mycelium under the bark, black bootlaces (rhizomorphs) in the soil, sudden death; mushrooms in autumn.

When to look

Summer – autumn

How to protect

  1. Prevention
    • Choose species that honey fungus rarely attacks (e.g. Vaccinium).
  2. By handA deep barrier (45 cm) of rubber sheeting in the soil blocks the bootlaces; regular deep cultivation breaks them.
Honey fungusdisease · summer – autumn

What you will see

Rotting roots, white mycelium under the bark, black bootlaces (rhizomorphs) in the soil, sudden death; mushrooms in autumn.

When to look

Summer – autumn

How to protect

  1. Prevention
    • Choose species that honey fungus rarely attacks (e.g. Vaccinium).
  2. By handA deep barrier (45 cm) of rubber sheeting in the soil blocks the bootlaces; regular deep cultivation breaks them.
More about this problem

What you will see

White powdery coating on leaves, stems and flowers; leaves may become distorted.

When to look

From spring onwards

How to protect

  1. Prevention
    • Destroy fallen infected leaves in autumn; do not over-feed, and protect from drought (stress invites powdery mildew).
  2. By hand autumnPrune out infected shoots early and destroy fallen leaves.
Powdery mildewsdisease · from spring onwards

What you will see

White powdery coating on leaves, stems and flowers; leaves may become distorted.

When to look

From spring onwards

How to protect

  1. Prevention
    • Destroy fallen infected leaves in autumn; do not over-feed, and protect from drought (stress invites powdery mildew).
  2. By hand autumnPrune out infected shoots early and destroy fallen leaves.
More about this problem

What you will see

Pale spots on leaves that turn into spore pustules mainly on the underside of leaves (orange, yellow, brown, black or white); in severe attacks yellowing and early leaf drop.

When to look

Mainly from midsummer to autumn

How to protect

  1. Prevention
    • Grow in warmth, sun and free-draining soil; tarragon dislikes damp, so do not overwater.
    • Clear fallen leaves, remove diseased parts quickly, clean tools and weed.
    • Do not over-feed with nitrogen — soft new growth is quickly attacked.
  2. By handFor light attacks, strip off affected leaves early; remove large amounts carefully. Do not compost summer/autumn debris (spores overwinter).
  3. Chemical — only when nothing else helpsFungicides are not recommended; for edible crops, gardeners have no fungicides available with good efficacy against rust.
Rustsdisease · mainly from midsummer to autumn

What you will see

Pale spots on leaves that turn into spore pustules mainly on the underside of leaves (orange, yellow, brown, black or white); in severe attacks yellowing and early leaf drop.

When to look

Mainly from midsummer to autumn

How to protect

  1. Prevention
    • Grow in warmth, sun and free-draining soil; tarragon dislikes damp, so do not overwater.
    • Clear fallen leaves, remove diseased parts quickly, clean tools and weed.
    • Do not over-feed with nitrogen — soft new growth is quickly attacked.
  2. By handFor light attacks, strip off affected leaves early; remove large amounts carefully. Do not compost summer/autumn debris (spores overwinter).
  3. Chemical — only when nothing else helpsFungicides are not recommended; for edible crops, gardeners have no fungicides available with good efficacy against rust.
More about this problem
Sources (5)

Frequently asked

Quick answers.

When does tarragon flower?

In July–August; the flowers are yellow, green or white.

When is tarragon harvested?

In March–November.

Does tarragon tolerate shade?

No, it needs full sun.

How much space does tarragon need?

At maturity 0.3–0.45 m wide and 0.3–0.9 m tall; recommended spacing 30 cm.

Honey fungus — what can you do?

Choose species that honey fungus rarely attacks (e.g. Vaccinium). A deep barrier (45 cm) of rubber sheeting in the soil blocks the bootlaces; regular deep cultivation breaks them.

Powdery mildews — what can you do?

Destroy fallen infected leaves in autumn; do not over-feed, and protect from drought (stress invites powdery mildew). Prune out infected shoots early and destroy fallen leaves.

Sources (8) Checked 24 October 2026

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